the fight against dr . robot ##nik . sonic has generated dozens of additional games and a large cast of recurring characters ( keeping sonic and robot ##nik as main ##sta ##ys ) , surviving the end of sega console manufacturing after the dream ##cast . the series has ventured from platform ##ers to fighting , racing , role @ - @ playing , and sports games , and has expanded into anime and manga , cartoons and comic books , novels , and toys . sonic the hedge ##hog has become one of the best @ - @ selling video game franchises of all time , with over 150 million copies sold by may 2014 . the game ' s first stage , green hill zone ,
the fight against dr. robotnik. sonic has generated dozens of additional games and a large cast of recurring characters ( keeping sonic and robotnik as mainstays ), surviving the end of sega console manufacturing after the dreamcast. the series has ventured from platformers to fighting, racing, role @ - @ playing, and sports games, and has expanded into anime and manga, cartoons and comic books, novels, and toys. sonic the hedgehog has become one of the best @ - @ selling video game franchises of all time, with over 150 million copies sold by may 2014. the game's first stage, green hill zone,